70cc bbk question
 

I installed a 70cc big bore kit on my vento zip gt5
when I went to test how fast it is it only went less than 20 mph
the stock engine went 30 mph

did you up jet the carb

If you add a BBK, you probably need to upjet the carb, get a free flow exhaust, and a more open air filter.

where can I buy a jet online for the stock carb?

about half way down the page it has a drop down box to pick what size. i suggest to buy a couple different sizes 80 85 http://www.scrappydogscooters.com/50...OKE_PARTS.html

Thanks guys

anyone know anything about this mikuni carburetor? it has manual choke
I bought it from someone for 10 bucks
it fits perfectly on the intake manifold of my vento zip gt5
the main jet is different size than the stock carb
http://i611.photobucket.com/albums/t...ps9bfacf16.jpg

the jets look different but i think the threads might fit for a swap or you can buy new one to fit the mikuni carb
http://www.jetsrus.com/a_jets_by_car...2_main_Hex.htm
Attachment 264

Here is a jet kit http://www.partsforscooters.com/114-...ategory=133078